Abstract
The petrified wood for this study was collected from the Upper Jurassic Morrison Formation in the south central part of Utah on the Colorado Plateau. The study area, located near Clay Point, Garfield County, Utah, is south of the Henry Mountains. The site is relatively undisturbed containing many well preserved specimens. This study constitutes the first detailed study of fossil coniferous woods of the Morrison Formation. Although this formation contains abundant petrified wood, its floral composition has been virtually unknown. Three genera have been identified in this study: Protopiceoxylon Gothan, Mesembrioxylon Seward, and Taxaceoxylon (Unger) Krausel. Protopiceoxylon has only been reported once before from strata of the Jurassic age in North America (Knowlton, 1900). Mesembrioxylon and Taxaceoxylon have not been reported previously from the Jurassic of North America.
Degree
MS
College and Department
Life Sciences; Plant and Wildlife Sciences
Rights
http://lib.byu.edu/about/copyright/
BYU ScholarsArchive Citation
Medlyn, David Arthur, "Three new species of petrified wood from the upper jurassic Morrison formation of southern Utah" (1972). Theses and Dissertations. 8091.
https://scholarsarchive.byu.edu/etd/8091
Date Submitted
1972-05-01
Document Type
Thesis
Handle
http://hdl.lib.byu.edu/1877/Letd426
Keywords
Paleobotany, Jurassic; Paleobotany, Utah; Trees, Fossil
Language
English